Ultrasonic sensor

Details Ultrasonic sensor Ultrasonic sensor

2007-09-13

2009-11-03

Benson, Walter (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S334000

Reexamination Certificate

active

07612485

ABSTRACT:
An ultrasonic sensor for detecting an ultrasonic wave, which is output from an ultrasonic generator and reflected by an object to be detected, the ultrasonic sensor includes: an acoustic matching layer having a first surface and a second surface, the first surface which receives the ultrasonic wave, and the second surface which is opposite to the first surface; and an ultrasonic detection element including a vibration member. The vibration member is coupled with the second surface of the acoustic matching layer. The acoustic matching layer is repeatedly deformable in accordance with a standing wave, which is generated in the acoustic matching layer by the received ultrasonic wave. The vibration member resonates with the repeat deformation of the acoustic matching layer.

REFERENCES:
patent: 5664456 (1997-09-01), Eckert
patent: 7411335 (2008-08-01), Eckert et al.
patent: 2007/0144261 (2007-06-01), Okuda et al.
patent: A-10-224895 (1998-08-01), None
patent: 10-224895 (1998-10-01), None
patent: A-2003-284182 (2003-10-01), None

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